[arm-gnu] Regarding Double Data Type Support on Cortex M4

[42Bastian]

Hi

> Later I have enabled the Floating Point Unit (FPU) present in processor. So
> now, I can perform any mathematical operations on float datatype but still
> Hard Fault problem occurs with Double data type. 

If you read the Cortex-M4F manual carefully, you will see it only supports
float, not double.

Cheers
-- 
42Bastian
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